Disk-sharpener.



UNITED STATES PATENT onmcn.

FREDERICK C. WARNE, OF MANSFIELD, OHIO, ASSIGNOR 'IO RODERICK LEAN MANU-FACTURING COMPANY, OF MANSFIELD, OHIO, A CORPORATION OF NEW JERSEY.

nIsK-sHAnrnNnn.

To all whom it may concern:

Be it known that I, FREDERICK G. WARNE, a. citizen of the United States,residing at Mansfield, in the county of Richland and State of Ohio, haveinvented certain new and useful Improvements in Disk Sharpeners, ofwhich the following is a specificatlon.

My invention relates to lIIIPIOVBIIlGIltSlH disk Sharpeners, the presentembodiment being particularly designed and adapted for use in sharpeningthe disks commonly used on disk harrows without removing the disks fromthe gang.

The primary object of the invention 1s to provide a generally improveddisk sharp ener, of exceedingly simpleand efiicient construction whichmay be readily attached to or detached from an ordinary disk harrow andwhich when attached will sharpen the disk during the ordinary operationof the harrow or implement.

A still further object is the provision of improved attaching meanswhereby the improved disk sharpener may be readily attached to thevarious styles of disk harrows having a scraper bar carrying a series ofdepending disk cleaners or scrapers.

A further object is the provision of a disk sharpener that may bereadily applied and used in connection with an implement of the abovetype without in any way interfering with the working parts during theordinary operation of the same in the field,the improved device beingadapted to be applied successively to the respective disks untilsharpened to the requisite degree.

With the above mentioned and other objects in view, the inventionconsists in the novel construction, arrangement, and combination ofparts, hereinafter described, illustrated in one of its embodiments inthe accompanying drawings, and particularly pointed out in the appendedclaims.

Referring to the'drawings, forming a part of this specification, Figure1, is a cross sectional view through a disk gang and gang frame, and ascraper carrying bar, the latter being equipped with the improved disksharpener in its operative positionfor use.

Specification of Letters Patent.

like parts throughout all the figures of the drawings. 7

In the present embodiment of my invention I have shown the improvedattachment or disk sharpener applied to a disk harrow of conventionalform, said harrow embodying a suitable disk gang frame 1, provided withsuitable standards 2, suitably connected to a gang axle 3, the lattercarrying a series of disks 4. The frame 1, is provided with "suitablebearing brackets 5, carrying a horizontally extending rotatably mountedscraper carrying bar 6, the latter being armed with a plurality orseries of depending scrapers 7. n i

As a means of causing the lower or active ends of the scrapers 7 to bemoved toward and from the peripheries of the disks 4, and

toward and from the hub portions thereof to meet the varying demands ofservice, the

scraper carrying bars 6, are usually provided with suitable actuatingmechanism, such for example,as a forwardly extending foot lever 8, asshown in Fig. 1 of the drawings whereby upon the actuation or depressionof the foot lever 8, the bars 6, will be tiltedorrotated therebybringing the free ends of the scrapers 7, toward the periphery of thedisks, and as a means of causing the scrapers 7, to be ;moved towardthe'axle or hub portions of'the disks a coiled spring 9, isprovided,"one end of said coiled spring being suitably connected to the scrapercarrying bars 6, to actuate the latter and the other'end being suitablyconnected to some fixed portion of the gang frame 1. In the specificform of disk harrow shownin Fig. 1 the scraper carrying bar 6, is formedof angle iron and ismounted'in the brackets 5, through the medium of ahinge pin 10, suitably connected to the bar 6, said hinge pin beingsurrounded-by the spring 9.

- As ameans ofholding the scraper carrying portion 6, and the scrapers 7in their re- Patented Feb. 22, 1916. Application filed, November 9,1914. Serial No. 870,983.

spective adjusted positions against the resistance of the springs 9,when, adjusted through the medium of the lever 8, the latter may beprovided with a notched pivotally mounted. bracket 11, adapted to engagebeneath the forwardly projecting bracket 12, on the member 1, and as ameans of adjustingthe throw or movements of the scraper 7, toward theouter peripheries of the disks 4:, a curved pivotally mounted adjustingbolt 13, may be provided on the lever 8, said bolt extending-upwardlythrough an opening in the bracket 12, and being provided with anadjusting nut '14, which latter will act'as a stop against the bracket12, when the foot lever is depressed.

Referring now to the improved attachment or disk sharpener, it will beobserved. that a tool carrying attaching arm 15, is provided, said arm15, being provided. at one end with a cutter tool or member 16, adaptedto be brought into engagement with and to be maintained in engagementwith the outer periphery or edge of the disk in the sharpeningoperationas hereinafter described.

The improved cutter 16, may be conveniently formed as shown, and,.in thepresent instance attached :to the arm 15, through themedium of acentrally located opening receiving and takingover a threaded shank 15provided with attaching and securing nut 15 it being obvious that bythis 3.1". rangement various sides of the cuttertool may be brought intoengagement with the edge of the disk being sharpened.

As a means of conveniently attachingand clamping the tool carrying armto such commonly employed scraper carrying bars 6, of the forms shown inFigs. 1 and 2.0f

the drawings, respectively, suitable clamping members or clips 17 areprovided, said clips being provided at their forward ends with suitablerecesses 17 corresponding in form to the form of the scraper carryingbars 6, shown'in Fig. 1 of the drawings and being adapted to receive andcontain, or in other words form a seat for, the angular bars 6, shown insaid Fig. l of the drawings, and being adapted to be attached and heldin position by means of the clamping bolts 18, and 18, the main clampingbolt 18, having an angular shaped head passing'through a slot 15, in thehead of the arm 15, and by means of which the latter may be adjusted.

As a means of adapting the clamps 17, for

attachment to a scraper carrying bar 6, of

the specific form shown in Fig. 2 of the drawings the clamping-membersor clips 17,

are provided with angular shaped notches or recesses 17 conforming toand adapted to form the seat for the angular sides of the bar .6, asshown in Fig.2 of the drawings, it being observed that in so attachingthe clamping members 17, are simply loosened and swung upon the bolt 18,to a reversed position to that shown in Fig. ,1 of the= drawings.

lVhen it is desired to bring the cutter .16, into active use forsharpening an adjacent disk as shown in the drawings the scrapercarrying bar 6, is released by thescraper adjusting 11160113111811 (asfor example shown in Fig. 1) thereby bringing the spring =9,

into active operation and thereby swinging the tool carryingattachingarm 15, toward the outer periphery of the adjacent disk 6, the tensionof the springs 9, serving to maintain the cutter 16,-in active cuttingposition against the disk as the latter is revolved during the ordinaryoperation of the 'disk harrow; WVhen' the disk is sharpened theattachment may be: readily adjusted on the bar 6, in proper positionfor.

1. In a diskg sharpener, the combination with adisk implement providedwith 1 spring resisted rotatably mounted scraper sufficiently carryingbar, and means for moving said bar; of a cutter carrying arm .detachablyconnected to said bar and adapted to-bring thecutter into and out ofoperative engagement with one'ofthe disks of said implement through themovements of said bar.

2. In a disk sharpener for a disk imple ment having a pivotally mountedspring resisted scraper carrying, bar, means for moving said bar, and.an attaching arm carried by said. bar and provided with a tool:

adapted to engage and be held against the periphery of said disk by theaction of *said spring resisted bar.

3. In a disk sharpener, the combination with a disk implement including,a pivotally mounted bar, a spring for resisting; the movements of said:bar on its pivot; and means for moving said bar against the resistanceof said spring; of an attaching arm connected to said pivotally mountedbar and provided at its freeend with a cutter tool adapted to be broughtinto and held in engagement with a disk when said bar is moved by theaction of said spring and the release of said bar actuating means.

4. In a disk sharpener for diskharrows, the combination with a disk gangframe provided witha' plurality of disks and a; spring resistedpivotally mounted scraper carryingqbar, and mechanism for actuating1,172,413 a p g and adjusting said scraper bar against the said scraperbar actuating and adjusting resistance of said spring; of a dependingmechanism is released. 1o attaching arm provided with adjustable Intestimony whereof I have aflixed my clamps having recesses adapted toreceive signature in presence of two witnesses.

and clamp over said bar, and a cutter tool FREDERICK C. WARNE. at thedepending end of said attaching arm WVitnesses: Y adapted to be broughtinto and held in en- C. A. HINEs,

gagement with the periphery of a disk when A. B. MCLEAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. G.

